Problem with Renaming a Column in SQL Server

Question

So I was trying to rename a column in my table from Conversion_Fee_PerShare to just Conversion Fee.

I looked up online and found the syntax

Answer 1

/*Initial Table*/  
CREATE TABLE AllocationDetails
  (
     Conversion_Fee_Per_Share FLOAT
  )

/*Faulty Rename*/  
EXEC sp_rename
  'dbo.AllocationDetails.[Conversion_Fee_Per_Share]',
  '[Conversion_Fee]',
  'COLUMN'

/*Fixed Rename*/  
EXEC sp_rename
  'dbo.AllocationDetails.[[Conversion_Fee]]]',
  'Conversion_Fee',
  'COLUMN'

DROP TABLE AllocationDetails 

The column name to use in the second sp_rename call is that returned by SELECT QUOTENAME('[Conversion_Fee_Per_Share]').

Alternatively and more straight forwardly one can use

EXEC sp_rename
  'dbo.AllocationDetails."[Conversion_Fee]"',
  'Conversion_Fee',
  'COLUMN'

QUOTED_IDENTIFIER is always set to on for that stored procedure so this doesn't rely on you having this on in your session settings.

Answer 2

Never mind I found out:

ALTER TABLE dbo.AllocationDetails
DROP COLUMN [[Conversion_Fee]]]

OR

sp_RENAME 'dbo.AllocationDetails.[[Conversion_Fee]]]' , 'Conversion_Fee', 'COLUMN'

these will work fine. :)

Using Double Quotes:

exec sp_rename 'dbo.AllocationDetails."[Conversion_Fee]"' , 'Conversion_Fee', 'COLUMN' 

will also work.

Answer 3

Run following queries together.

USE [DATABASE_NAME];

GO
EXEC sp_rename '[SCHEMA_NAME].[TABLE_NAME].OLD_COLUMN_NAME', 'NEW_COLUMN_NAME', 'COLUMN';
GO

It will resolve your problem

Answer 4

To fix this:

sp_RENAME 'dbo.AllocationDetails.[[Conversion_Fee]]]' , 'Conversion_Fee', 'COLUMN'